Fiber Bragg Grating-Based Sensor System for Strain and Angle Assessment in Passive Orthosis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F25%3A10257820" target="_blank" >RIV/61989100:27240/25:10257820 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/xpl/aboutJournal.jsp?punumber=7782634" target="_blank" >https://ieeexplore.ieee.org/xpl/aboutJournal.jsp?punumber=7782634</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/LSENS.2025.3541344" target="_blank" >10.1109/LSENS.2025.3541344</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fiber Bragg Grating-Based Sensor System for Strain and Angle Assessment in Passive Orthosis

Popis výsledku v původním jazyce

In this letter, we present the development and application of a fiber Bragg grating (FBG) sensor system for the instrumentation of a lower limb passive orthosis for gait assistance. The sensors include FBG strain sensors attached to the orthosis structure for monitoring the strains in the structure during gait. In addition, another FBG is used as angle sensor positioned on the user lumbar for angle monitoring of the trunk in the frontal plane. The sensors were characterized as a function of strain and angle resulting in root-mean-squared errors of 6.15 mu is an element of and 0.30 degrees for strain and angle, respectively. Then, in the application tests, the strain sensor demonstrate its feasibility by means of strain estimation within the range of 10-200 mu is an element of as well as the periodic strain pattern following the ground reaction force variation during the stance phase of the gait. Furthermore, the angle measurement during the wearable gait tests indicated a measurement range of -15 degrees to 30 degrees with an estimated linear velocity of 4.0 km/h, which is the reference one used on the treadmill. Therefore, the proposed sensor system is an integrated solution for in-situ gait analysis, which can extent the functionalities not only of the passive orthosis, but also in active rehabilitation robots.

Název v anglickém jazyce

Fiber Bragg Grating-Based Sensor System for Strain and Angle Assessment in Passive Orthosis

Popis výsledku anglicky

In this letter, we present the development and application of a fiber Bragg grating (FBG) sensor system for the instrumentation of a lower limb passive orthosis for gait assistance. The sensors include FBG strain sensors attached to the orthosis structure for monitoring the strains in the structure during gait. In addition, another FBG is used as angle sensor positioned on the user lumbar for angle monitoring of the trunk in the frontal plane. The sensors were characterized as a function of strain and angle resulting in root-mean-squared errors of 6.15 mu is an element of and 0.30 degrees for strain and angle, respectively. Then, in the application tests, the strain sensor demonstrate its feasibility by means of strain estimation within the range of 10-200 mu is an element of as well as the periodic strain pattern following the ground reaction force variation during the stance phase of the gait. Furthermore, the angle measurement during the wearable gait tests indicated a measurement range of -15 degrees to 30 degrees with an estimated linear velocity of 4.0 km/h, which is the reference one used on the treadmill. Therefore, the proposed sensor system is an integrated solution for in-situ gait analysis, which can extent the functionalities not only of the passive orthosis, but also in active rehabilitation robots.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20200 - Electrical engineering, Electronic engineering, Information engineering

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Sensors Letters

ISSN

2475-1472

e-ISSN

2475-1472

Svazek periodika

9

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

nestránkováno

Kód UT WoS článku

001438156600005

EID výsledku v databázi Scopus

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